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Home >> Subaru >> 2013 >> Legacy Premium, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 37 (Engine Controls (Diagnostics) (H4DOTC)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0246 Turbo/Super Charger WASTEGATE Solenoid "A" High >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK HARNESS BETWEEN ECM AND WASTEGATE CONTROL SOLENOID VALVE CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connectors from ECM and wastegate control solenoid valve.
  3. Turn the ignition switch to ON.
  4. Measure the voltage between ECM and chassis ground.

    Connector & terminal 

    (B134) No. 33 (+) - Chassis ground (-): 

 Is the voltage 10 V or more? Repair short circuit to power in the harness between ECM and wastegate control solenoid valve connector. Go to step 2. 
2 CHECK WASTEGATE CONTROL SOLENOID VALVE. 
  1. Turn the ignition switch to OFF.
  2. Measure the resistance between wastegate control solenoid valve terminals.

    Terminals 

    No. 1 - No. 2: 

 Is the resistance less than 1 Ω? Replace the wastegate control solenoid valve. < Refer to WASTEGATE CONTROL SOLENOID VALVE . > Repair the poor contact of ECM connector.
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